Brooke brings up a great point- canning does have some drawbacks. It is not all fun and games.
I still am fighting the battle with fruit flies, (but I think I may finally have the upper-hand) It gets hot, and its a TON of work. And sometimes you get random surprises, like the jar of pickles Jeremy and I discover at his mom's house- they were a little dated. They were from way back in '85- the year I began kindergarten people! Whoa. Therefore, be diligent in rotating.
But even if you are good at rotating accidents can still happen. Just yesterday I was rotating the 06 juice to the front and the 07 to the back a lid "flipped" off. "Weird." I thought. As I was carefully bringing jar to the front I was hoping it hadn't been unsealed too long. Not much luck. It apparently had been fermenting a while since it had a generous amount of white mold growing on the top of what looked like purple refrigerated gravy that has turned into a solid mass. The smell was fantastic!!
So, beware- every silver lining is ALWAYS around a dark cloud.